MAYBE
29.41/10.18	MAYBE
29.41/10.18	
29.41/10.18	Problem:
29.41/10.18	 a(x1) -> x1
29.41/10.18	 a(b(x1)) -> b(a(c(b(a(c(x1))))))
29.41/10.18	 b(x1) -> x1
29.41/10.18	 c(c(x1)) -> x1
29.41/10.18	
29.41/10.18	Proof:
29.41/10.18	 Open
29.41/10.19	EOF